Jet JMD-40GHPF Operating Instructions And Parts Manual

Contents

11Figure 7-2: head adjustments7.3 Table adjustmentsSee Figure 7-3.For X-axis longitudinal feed, loosen table locks (L 1 )and use side handwheel (L 2 ). The cross feed tablelocks (C1 ) should be kept tight.For Y-axis cross feed, loosen table locks (C 1 ) anduse front handwheel (C 2 ). The longitudinal feedtable locks (L 1 ) should be kept tight.The scales can be adjusted by loosening screw (T 1 )and rotating scale to align with indicator.The stops (T2 ) can be adjusted to any point alongthe longitudinal axis. Retighten screws afterpositioning.Figure 7-3: table and gib adjustments7.4 Gib adjustments7.4.1 Table gibsSee Figure 7-3.Gibs have been properly adjusted by themanufacturer. After a period of time, however,movement of the table over the ways will causenormal wear and some “play” between components.To adjust gibs to eliminate this play, proceed asfollows.1. The X-axis gib adjustment screw (XG, Figure 7-3) is found on right side of saddle beneath table.The Y-axis gib adjustment screw (YG, Figure 7-3) is found to the right on the table face.2. Turn each screw slightly clockwise to tighten.Turn table handwheels to check tension; slightdrag should be felt during movement.3. Re-adjust as required.7.4.2 Column gib (JMD-45 series only)A Z-axis gib adjustment screw is located atop thesquare column near oil cup (see Z, Figure 7-2).Follow same principle as described under sect.7.4.1. Slight drag should be felt when turning crankhandle.7.5 Spindle returnThe spindle return is pre-set by the manufacturerand should not require adjustment. If spring tensionbecomes a future issue due to wear, proceed asfollows.See Figure 7-4.1. Loosen knob (A) just enough to rotate springcap (B) past pin (C) and settle it on the nextnotch. DO NOT remove spring cap or allow itto rotate freely in your hand, or spring mayunwind.2. Rotate spring cap clockwise to decreasespring tension; counterclockwise to increase.3. Tighten knob (A).Figure 7-4: spindle return spring adjustment